Compound tool rest and holder for lathes



W. S. GOODING. COMPOUND TOOL BEST AND HOLDER FOR LATHE'S. APPLICATION FILED'MAR. I5. 1920.

1,383,299. Pa ent d July 5, 1921'.

F 72- H I i l UNITED STATES PATENT OFFICE.

' WIL LIAIVI S. GOODING, OF CHICAGO, ILLDVOIS.

COMPOUND TOOL BEST AND HOLDER FOR LATHES.

Application filed March 15, 1920. Serial No. 365,987.?

To all whom it may concern:

Be it knownthat I, VILLIAM S. G ODING, a citizen of the United States, anda resident of Chicago, in the county of Cook andState of Illinois, have invented certain new and;

Among the objects ofthe invention are to obtain a compound tool rest which may also be used as a tool holder, attachable to plain tool rests on lathes; to obtain a compound tool rest and holder which is easily mounted and adjusted on an ordinary plain tool rest, and by means of which the same results can be effectively obtained as on lathes which are provided with the well known compound tool rest. Additional objects are to obtain a compound tool rest which is durable, not liable to break or get out of order, and economically made, and which is adapted for use in comparatively heavy work.

In the drawings referred to,

Figure 1 is a side elevation of a compound tool rest and holder embodying the invention.

Fig. 2 is a top plan view of the shell or case of the device, with the ends shown in horizontal section.

Fig. 3 is a view of a screw member; and

Fig. 4 a view of an adjustable member of the device adapted to'hold a tool, and

Fig. 5 is a vertical section on line 5--5 of Fig. 4:, viewed in the direction indicated by arrows.

Fig. 6 is a vertical section of a member secured in the right hand end of the barrel illustrated in Fig. 2, and

Fig. 7 is a front elevation of said member.

A reference character appliedto designate a given part indicates said part throughout the several figures of the drawing, wherever the same appears.

Specification or Letters Patent.

Patented J my 5,

tool holder and rest, which is provided with the barrel E, corresponding to and longitu-.; dinally movable in thebored out end of'shell A; and F represents thehead of the tool holder or rest. 7", f, represent raperturesin head F, which are, respectively:adapted toreceive one end of a tool, (as X, Fig. 1),:to be held thereby. Barrel E is provided-with an internally screw threaded'well, (G, Fig."

4;). (Figs. 4 and 5), representsa longitudinally extending groove on :barrel E, which corresponds with. and. slides easily on abutment C, to revent'rotationr of member D in shell A, w iile permittinglongitudinal movement thereof in said shell.v rrI-I represents a member illustrated as provided with external screw threads h corresponding with I and fitting-into the internal screw threads at of shell A, by means whereof said member is rigidly secured in one end of said shell. I represents a screw threaded member which is rotatably mounted in member H, which extends through said member H and axially into said shell A. The screw threads on member I corres 0nd with the internal screw threads in well and by rotating said member I the member D is moved longitudinally in shell A. J represents an annular shoulder on member I which abuts against the adjacent end of member H. K represents an internally screw threaded head, and L represents a handle which is rigidly secured on member I, by means of said head, or nut). The hub Z of handle L is provided with internal screw threads which correspond with the external screw threads i on member I, and said handle L is thereby rigidly secured on said member, to prevent longitudinal movement thereof. Head K acts as a set nut on said hub Z. s i

To assemble the several parts of the device the barrel E is inserted in the bored out end a of shell A, with abutment C in groove 9. Member D when the barrel E thereof is thus inserted in the shell is movable longitudinally, but is not rotatable. Member H is secured to the opposite end of shell A, as by screw threads h and a being engaged; and the screw threaded member, I is turned (member H acting as the journal bearing therefor), the member D being at the same Y represents a tool post of a plain tool rest; and to mount the device on a lathe, the abutments B B are moved horizontally to inclose said tool post. -The bar Z is then placed in the ordinary rectangular tool aperture in post Y, so as to rest on the upper or,

top faces of saidabutments B, B, and the set screw 1 of post Y is forced down on said bar Z to set said bar on said abutments, to hold said abutmentsand shell A rigidly in place; r

The abutments B, Bare to be turned in I a horizontal plane to'an adjusted position,

prior to the setting, as above recited, of the set bolt or screw y, in the same manner ordinary tools are placed in the tool post and adjusted prior to forcing the bolt or screw 3 down thereonto. i

Iclaimn i V M 1. In a compoundtool rest, a shell, parallelabutments on said shell, and said shell provided with a longitudinally extending passage-way therethrough, a member longitudinally movable in said passage-way, and provided with an axially extending screw threaded well, a member rigidly attached to one end of said shell, a screw threaded member rotatably mounted in saidlast member,

said screw threaded member corresponding 'wlth the screw threads in sald well, and entending passage-way therethrough, a mem her in said passage-way, means to prevent rotation of said member, a head provided with apertures arranged to hold a tool on said member, and said member provided with an axially extending screw threaded well, armember rigidly'attached to one end of said shell, a member rotatably mounted in said rigidly attached member and provided at one end with screw threads corresponding with and fitting in the screw threads in said well, and a handle attached to the other end thereof, all combined as set forth. .7

WILLIAM S. GOODING. In the presence ofi 7 CHARLES TURNER (BROWN,

B. S. BROWN. 

